Lumber-computer.



PATENTED MAR. 14, 1905.

J. E. QHRITTON. LUMBER COMPUTER.

APPLIOATION FILED JULY 19,1904.

2 SHEETS-SHEET 1.

'I Inventor Witnesses Attornegs PATENTBD MAR. 14, 1905.

J. E. GHRITTO N.

LUMBER COMPUTER.

APPLICATION FILED JULY 19.1904.

2 SHEETS-$111731 2.

fawl? 677)" Witnesse Httom'egs No. 784,660. PatentedMarch 14, 1905.

UNITED STATES PATENT OFFICE.

JOSE E. OHRITTON, OF ROOKYFORD, COLORADO, ASSIGNOR OF ONE-HALF TO HENRY E. BURKDOLL, ROOKYFORD, COLORADO.

LUMBER-COMPUTER.

SPECIFICATION forming part of Letters Patent N0. 784,660, dated. March 14, 1905.

Application filed July 19, 1904. Serial No. 217,268. I

whom it y con/067"! responding parts in each and every figure of Be it known that I, J OSE E. OiInI'rToN, a citithe drawings. zen of the Umted States, residing at Rocky- While the shape of the present device is not ford, in the county of Otero and State of (1010- essential to the effective operation thereof, a

5 rado, have invented a new and useful Lnmcircular shape is preferred, as it materially ber- Computer, of which the following is a facilitates the setting and also permits of the specification. device being readily carried in a pocket of This invention relates to computing devices, the clothing, and therefore the two main memand has for its object to provide an improved bers A and B are in the form of concentric- IO device of this character particularly arranged all varranged disks, which may be formed of for readily determining the contents of lumwood, metal, cardboard, or any other suitber, timber, and masonry. able material. One of these members-as,

It is furthermore designed to arrange the for instance, the one designated Bis slightly 7 device in compact form and to provide for smaller in diameter than the other, and the i 5 the convenient setting thereof to indicate the two members are connected by a central pivot cubical contents of a piece of lumber when G, wherefore either member may be rotated the three dimensions thereof are known. upon the pivotal connection. As indicated 6 5 With these and other objects in view the in Figs. 4c, 6, and 7, each of these members is present invention consists in the combination provided with a series of radial slots D, which 20 and arrangement of parts, as will be hereinterminate short of the center of the member, after more fully described, shown in the acwith a smaller opening E, located between the companying drawings, and particularly pointinner end of the slot and the pivot O. The 7 ed out in the appended claims, it being nnnumber of slots and openings vary accordderstood that changes in the form, proporing to the size and capacity of the device.

2 5 tion, size, and minor details may be made At one edge of each slot D, preferably the within the scope of the claims Without departleft-hand edge, there is a radial table F made ing from the spirit or sacrificing any of the up of a succession of numerals corresponding advantages of the invention. to the lengths in feet of standard pieces of In the drawings, Figure 1 is a plan view of lumber and timber, thereby constituting a 3 a computing device embodying the features length-table. At the left-hand side of the of the present invention. Fig. Qis a sectional opening E there is a numeral (Ji -as, for inview thereof. Fig. 3 is a reverse plan view stance, 1 indicatingathickness of one and of one of the members of the device. Figs. one-half inches. The reverse side of each 4t and 5 are detail views of modified forms of member of the device is provided with a 35 the invention. Fig. 6 is a complete section of pluralityof radial tables H, the numerals of the modified form shown in Fig. l. Fig. 7isa which indicate board feet, and extending detail view of onehalf of one of the members around the pivot O at the inner ends of the of the modified device looking at the inner table H is a circular concentric table 1, the face thereof. Fig. 8 is a detail view of annumerals of which indicate widths and are ar- 4 other modified form of the device, parts beranged opposite the inner ends of the respecing broken away to disclose the three memtive contents-tables H. For convenience in bers thereof. Fig. 9 is a complete sectional turning one of the members a handle J is pro- 9 view of the form shown in Fig.8. Fig. 10 vided at the outer peripheral edge of the is a plan View of a further modified form of smaller member B and is preferably in the 45 the device. Fig. 11 is a perspective view of nature of a flexible tab.

' another modifiedform of the invention. Fig. In using the device as thus far described to 12 is a cross-sectional view thereof. obtain the contents in feet of a piece of tim- Like characters of reference designate corber one and one-half inches thick, twelve inches wide, and twelve feet long the member B is rotated until the opening which is adjacent the numeral "1 exposes the numeral 12 the member B and disposed opposite the numeral 12 of the length-table F, it will be seen that eighteen board feet are contained in a piece of lumberof thedimensions just given. To obtain the contents of a piece of timber of the same thickness but of a different width, the member B is rotated or set to bring the opening E adjacent the thickness index-numeral 1% into position to expose any of the numerals in the circular width-table I corresponding to the width of the piece of timber to be measured. It will thus be understood that one radial slot and its adjacent opening E may be set to any and all of the contentstables H within the limit of movement of the member B, which is governed by a suitable stop device K. In the embodiment shown in the present drawings, two diametrically opposite slots D have been shown, and therefore the member B is limited to a half-rotation, the contents-tables H upon one half of the member A being computed for a thickness of one and one-half inches, while the tables upon the other half of the member are computed for a thickness of one and one-fourth inches. The capacity of the device can of course be increased by increasing the number of radial slots and the number of contentstablcs in accordance therewith.

A modified arrangement of the device has been shown in Figs. 1, 2, and 3, wherein the member B is provided with opposite slots L and M, with a thickness-table N, expressed in inches and located at the left-hand side of the slot L, while a length-table 0, expressed in feet, is provided at the left-hand side of the slot M. One half of the inner face of the member A is provided with a plurality of radial width-tables one of which has been indicated at P, expressed in inches and exposed through the slot L, while the opposite half of the member A is provided with a plurality of radial contents-tables one of which has been shown at R and is exposed through the slot M. By this arrangement the contents of pieces of timber having various combinations of widths and thicknesses may be quickly determined. For instance, a piece of timber two inches thick by six inches wide and eight feet long contains eight board feet, while a piece of timber three inches thick by four inches wide and twelve feet long contains twelve board feet.

A still further modified form of the invention is disclosed in Fig. 5, which differs from that shown in Fig. 4c in the employment of an arcuate slot or opening S to disclose the circular table I instead of individual openings E for the respective radial slots D.

l l l The capacity of the device may be materially increased by interposing a third disk T I between the disks A and B and providing each in the circular table I, and then by referring to the numeral in the radial contents-table H, e which is exposed through the radial slot of side of the intermediate disk '1 with radial contents-tables H, and instead of employing the opening E at the inner end of the slot D, as in Fig. L, said opening may be located at the outer end of the slot D, as indicated at E in Fig. 8, in which event the circular widthtable will be located at the outer edge of the intermediate disk member, as at I. In addition to the width-table l a series of indexnumerals U may be provided upon the outer exposed peripheral portion of the disk T, so as to facilitate the alining of any of the contents-tables H with the slot D. While the series of numerals 1 serves as an index, said numerals may be concealed by the disk B, and therefore it would be necessary to first turn one of the disks to expose the numerals and then turn the disk in the proper direction to aline the desired numeral with the slot 1). By the employment of the index-numerals U, which are always in view, only one turn of the disk is necessary.

Another modilied form of the device has been shown in Fig. 10, wherein each half of the member B is provided with asingle radial slot or opening 1), with its outer end contraeted, as at a, to form a pointer adjacent the outer peripheral edge of the member for cooperation with the annular series of widthnumerals U upon the member A. At one side of the slot D is a column of figures F. indicating lengths, while the numeral 1 indicated at (1, designates thickness measurement. Upon the larger disk member A is a series of radial contents-columns, one of which has been shown at H exposed through the slot .D. In this latter form of the device the outer reduced or tapering terminal a of the slot D constitutes a pointer cooperating with the annular table U to facilitate the adjustment of the disk member B with respect to the disk member A and is similar to the form shown in Fig. 8.

I have also embodied the invention in an upright form, as indicated in Figs. 11 and 12, wherein the reference character 1/ designates an external upright cylinder having a base 0 for the support of the cylinder in an upright position. 'ithin this cylindrical casing is an inner cylinder-shell (l, which is rotatably supported upon an upright center shaft I mounted upon the base, with its upper end projected through the top of the cylindrical casing and provided with a suitable handle or finger-piece f, whereby the inner shell may be rotated upon its axis. The casing is provided with a set of three vertically-alined slots or openings, designated 1 it '2', respectively. The slot at the upper end of the cylinder is longer than the other slots and is provided at one side of the slot with a thickness-column of numerals j and a length col- IIO umn of numerals is, the inner shell being provided with a plurality of columns of widthnumerals, one of which columns has been inwith a length table or column of figures A, but

only a single thiclmess-numeralj, there being a contents-table an exposed through the slot 71, and only a single width-numeral Z exposed through said slots. The same arrangement is employed in connection with the slot i, the only diflerence being that the thickness-numeral j differs from the thickness-numeral of the slot it, and the contents-table m is computed in accordance with the thickness-hu- Ineral instead of 1%. It will be understood that for each of the slots 9 it 2' there is an annular series of width-numerals Z and an annular series of contents-tables m, any one of which may be brought in position for exposure through the proper slot by rotating the inner shell through the handle or [inger-piece f.

Having thus described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent,

1. A device of the class described including a pair of members which are concentrically pivotally connected, one of the members having a radial slot with-a length-table at one side of the slot and an opening with a numeral indicating thickness adjacent the opening, the other member having a plurality of radial contents-tables capable of being individually exposed through the slot, and acircular series of numerals indicating widths to be exposed through the opening in the first-mentioned member.

2. A device of the class described including a pair of members which are concentrically pivotally connected, one of the members having a slot with a series of factor-numerals at one side thereof and also provided with. an opening adjacent the slot with a factor-numeral adjacent the opening, and the other member being provided with a concentric series of factor-numerals capable of being exposed through the opening and a plurality of tables made up of numerals'designating multiples of the factors and capable of being individually exposed through the slot.

3. A device of the class described comprising a pair of movably-connected members, one of said members having a pair of factornumerals and the other member having a series of factor-numerals and a plurality of contents-tables arranged in cooperative relation with the respective factor-numerals thereof, one of said members being movable to bring the factor-numerals of the first-mentioned member into cooperative relation with any of the factor-numerals of the other member and a corresponding contents-table of the other member.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two witnesses.

JOSE E. CHRITTON. VV'tnesses:

H. G. SIGMAN, HENRY E. BURKDOLL. 

